Are the following processes exothermic or endothermic? a. When solid KBr is dissolved in water,

Name: Problem 43, Chapter 7: Chemistry An Atoms First Approach
Uploaded: 2020-05-14T21:18:59-08:00
Duration: 1 min 32 s
Channel: Jeffrey Aglow
Description: Are the following processes exothermic or endothermic? a. When solid KBr is dissolved in water, the solution gets colder. b. Natural gas (CH4) is burned in a furnace. c. When concentrated H2 SO4 is added to water, the solution gets very hot. d. Water is boiled in a teakettle.

step 1 Okay, so just a quick review before we answer this question, just going over what an exothermic

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Are the following processes exothermic or endothermic? a. When solid $\mathrm{KBr}$ is dissolved in water, the solution gets colder. b. Natural gas $\left(\mathrm{CH}_{4}\right)$ is burned in a furnace. c. When concentrated $\mathrm{H}_{2} \mathrm{SO}_{4}$ is added to water, the solution gets very hot. d. Water is boiled in a teakettle.

   Are the following processes exothermic or endothermic?
a. When solid $\mathrm{KBr}$ is dissolved in water, the solution gets colder.
b. Natural gas $\left(\mathrm{CH}_{4}\right)$ is burned in a furnace.
c. When concentrated $\mathrm{H}_{2} \mathrm{SO}_{4}$ is added to water, the solution gets very hot.
d. Water is boiled in a teakettle.

Chemistry An Atoms First Approach

Steven S. Zumdahl,… 2nd Edition

Chapter 7, Problem 43

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Solved by Expert Jeffrey Aglow

05/14/2020

Step 1

In an exothermic reaction, heat is released, resulting in an increase in temperature. On the other hand, in an endothermic reaction, heat is absorbed from the surroundings, leading to a decrease in temperature. Show more…

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Are the following processes exothermic or endothermic? a. When solid $\mathrm{KBr}$ is dissolved in water, the solution gets colder. b. Natural gas $\left(\mathrm{CH}_{4}\right)$ is burned in a furnace. c. When concentrated $\mathrm{H}_{2} \mathrm{SO}_{4}$ is added to water, the solution gets very hot. d. Water is boiled in a teakettle.

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Key Concepts

Exothermic Process

An exothermic process is one that releases energy, usually in the form of heat, to its surroundings. This type of process has a negative enthalpy change, meaning the products have lower energy compared to the reactants. Exothermic reactions are typically associated with a rise in the temperature of the surroundings and include common chemical reactions like combustion.

Endothermic Process

An endothermic process is one that absorbs energy from its surroundings, resulting in a cooling effect. In this type of process, there is a positive enthalpy change, meaning the reactants absorb energy to reach a higher energy state in the products. These processes can involve physical changes such as phase transitions or chemical reactions where energy input is essential.

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